{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{cccc}}
\hline\hline
                    &\multicolumn{2}{c}{Full Sample}&\multicolumn{2}{c}{Constrained}&\multicolumn{2}{c}{Unconstrained}&\multicolumn{2}{c}{Difference}    \\
                    &        mean&          sd&        mean&          sd&        mean&          sd&           b         &           t\\
\hline
Notional Net (USD mio)&        18.0&          77&        30.1&          92&        10.2&          64&         -20         &      (-1.9)\\
FXDNet/Assets (\%)  &        -2.9&           9&        -3.0&           9&        -2.9&           8&           0         &       (0.1)\\
Direction: Firm sells FC (\%)&        51.4&          49&        41.4&          48&        57.7&          49&          16\sym{*}  &       (2.6)\\
Pair: USD-KRW (\%)  &        86.2&          32&        95.5&          17&        80.2&          37&         -15\sym{***}&      (-4.4)\\
Pair: JPY-KRW (\%)  &        11.4&          30&         1.5&          11&        17.8&          36&          16\sym{***}&       (5.3)\\
Pair: EUR-KRW (\%)  &         1.8&          10&         1.6&           8&         2.0&          11&           0         &       (0.3)\\
Type: Forwards (\%) &        52.8&          49&        38.2&          47&        62.1&          48&          24\sym{***}&       (3.9)\\
Type: Swaps (\%)    &        39.0&          48&        48.4&          49&        32.9&          47&         -16\sym{*}  &      (-2.5)\\
Type: Options (\%)  &         7.9&          26&        13.4&          33&         4.3&          20&          -9\sym{*}  &      (-2.4)\\
Type: Futures (\%)  &         0.4&           6&         0.0&           0&         0.7&           8&           1         &       (1.0)\\
\hline
Observations        &         251&            &          98&            &         153&            &         251         &            \\
\hline\hline
\end{tabular}
}
